Home / 11,436.64-15,782.20-6,401.28

Finding the Fourth Proportional to 11,436.64, 15,782.20 and 6,401.28

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Solution

The fourth proportional to 11,436.64, 15,782.20 and 6,401.28 is: 8,833.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.64 : 15,782.20 = 6,401.28 : x
  2. Step 2: Convert to fraction form
    11,436.64/15,782.20 = 6,401.28/x
  3. Step 3: Cross multiply
    11,436.64x = 15,782.20 × 6,401.28
  4. Step 4: Simplify right side
    11,436.64x = 101,026,281.22
  5. Step 5: Solve for x
    x = 101,026,281.22/11,436.64
  6. Step 6: Final answer
    x = 8,833.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.